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Resource for science educators

We are always keeping an eye out for science outreach resources for educators in Arizona. Erin DiMaggio of ASU has developed a site worth highlighting called SCINEWS. Issue 1: Large Earthquakes in...

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Vandalism in Arizona

There are many competing factors to consider when choosing the location of a seismic site, not the least of which is safety for the equipment. The Arizona Integrated Seismic Network (AISN) has suffered...

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Japan Earthquake “felt” by AISN seismometers

AP Photo/Kyodo News) The fifth largest earthquake in recorded history struck Japan on Friday afternoon. The magnitude 8.9 event occurred at a shallow depth of 24km, 400 km off the east coast of Japan,...

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Tohoku-Chiho Taiheiyo-Oki Aftershocks

Aftershocks from the Tohoku-Chiho Taiheiyo-Oki earthquake continue to occur long after the main event on March 11. Below is a plot of events associated with the subduction zone off the east coast of...

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Palo Verde Questions

In light of the recent events across the Pacific and the large number of inquiries we have received regarding the safety of the Palo Verde Nuclear Plant and earthquakes, we have decided to post a...

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Clarkdale M3.7 Earthquake

As the clamor for information about Japan abates I’d like to revisit the earthquake we had in Clarkdale, Arizona last Friday. Generally after an earthquake event in Arizona the Arizona Earthquake...

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Coconino County Seismicity

As part of a recent update for hazard mitigation strategies in Arizona, the Arizona Geological Survey is characterizing seismicity and faulting for each county in the state. By far the most active...

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North Rim Seismic Stations

Most seismic stations require some amount of routine maintenance to ensure that data quality remains high. Wet weather this spring brought chaos to one of our stations near the North Rim of the Grand...

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Earthquake Swarms in Northern Arizona

During the last couple weeks northern Arizona has experienced an unusually high level of seismicity. In addition to the occurrence of a number of events around the state during the month of June, there...

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Colorado City Earthquakes

A small swarm of earthquakes occurred south of Colorado City between December 12th and 13th. The largest event in the swarm was magnitude 3.1, the smallest was 1.7. Year Month Day Lat Long Depth Hour...

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